Scrubbing-machine.



- E. H. SEPERIAN.

. SGRUBBING MACHINE.

APPLICATION FILED JUNE 30, 1908` Patented Dec. 8, 1908.

2 SHEETS-SHEET 1.

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. I v v E. H. SEPERIAN.

SGRUBBING MACHINE. APPLICATION FILED JUNE 30, 1908.

f Patented Dec. 8, 1908.

2 SHEETS-SHEET 2.

UlliI if iff-V' III- TTUIUII UNITED STATES PATENT OFFICE.

EZEKIEL n. sEFnRniN, or COLUMBUS, OHIO.

SCRUBBING-MACHINE.

Specification of Letters Patent.

Patented Dec. 8, 1908.

Application filed June 30, 1908. Serial N o. 441,184.

pushed over the surface to be scrubbed7 this action suicing to reciprocate a brush carried by the machine. The movements of the brush and the body of the machine are so proportioned that when said machine is propelled in one direction the brush in spite of its reciprocation moves only in one'direction-relative to the surface thereunder.

Another object is to provide a brush which can be readily attached to the machine and which has means for maintaining it incontact with the surface thereunder, said means being` disposed to automatically take up wear upon the brush.

A further object is to provide simple mechanism for actuating the brush.

With these and other objects in view the invention consists of certain novel features of construction and combinations of parts which will be hereinafter more fully described and pointed out in the claims.

In the accompanying drawings is shown the preferred form of the invention.

In said drawings: Figure 1 is a plan view of a scrubbing machine constructed in accordance with the present invention, the handle being removed. Fig. 2 is a section on line A-B, Fig. 1, and showing a portion of the handle in elevation. Fig. 3 is a section on line C--D, Fig. 1. Fig. 4 1s a plan view of a modified form of machine, a portion thereof being broken away. Fig. 5 is a section on line E-F, Fig. 4.

Referring to the figures by characters of reference, 1, 1 designate the side members of the frame of the machine each of said members having a longitudinal guide groove 2 in its inner face and each of said members also has upstanding portions 3 to which are connected parallel cross bars 4. Journaled within the end portions of the side members 1 are parallel shafts 5 and 6, said shafts rotating within the members 1 and the shaft 5 being provided at its ends with wheels 7. Shaft 6 is provided with preferably two cranks 8, 8 located between but adjacent the members 1 andfmounted upon each of these carriage consists preferably of two bars 10 in parallel relation and having their ends mounted to slide within the grooves 2, and arranged upon each of the bars 10 are posts 11 to which are secured connecting strips 12 which serve to hold thel bars 10 properly spaced apart at all times.

A backing plate 13 is arranged between the bars 10 and has o ositely extending arms 14 which are slidab y mounted on the posts 11, said arms being held normally pressed upon the bars 10 by means of .springs against strips 12k and arms 14` respectively. Openings 1,6- are formed within plate 13 and are designed to receive bolts 17 extending through the back of abrush B. Y'Any suitable means such vas4 wing nuts 18 may be mounted on the bolts 17 for clamping the brush against the plate 13, and if desired, a filling strip 19 of any suitable material may be interposed between the brush and plate. Recesses 20 are formed inthe outer faces of the side members y1 adjacent the centers thereofA and are designed to be pivotallyfengaged `by the ends of ahandle 21 `which may be of the construction employed with ordinary carpet sweepers and similar devices.

It is of course to be understood that the shaft 6 is provided with wheels 7 similar to those u on the shaft 5. The cranks 8 are of a lengt substantially e ual to the radius of each of these wheels so jhat the stroke of the pitmen 9 are substantially equal to the diameter of each wheel 7.

In using the machine herein described the same is moved in either direction by means of the handle 21. During one-half the rotation of the shaft 6 cranks 8 will drive the carriage A in the same direction in which the machine is moving and therefore aforward brushing action will be produced. During the other half of the rotation of shaft 6 the carriage A will be drawn in a direction opposite to that in which the machine is movmg and at approximately the saine speed so that the brush will thus remain practically stationary relative to the surface being cleaned during this movement. It will be apparent therefore that during one continuous movement of the machine in one direction an intermittent forward brushing cranks is a pitman 9 pivotally engaging oney of the cross bars 10 of a carriage A. This 15 mounted on and bearing -at their ends `heretofore referred to.

action will be produced. As the brush wears as a result of constant use the springs 11 will press the plate 13 downward, thus automatically taking up the wear and at the same time hold the brush firmly in contact with the surface thereunder. When it is desired to remove the brush and substitute a new one it is merely necessary to unfasten the bolt 17. It will be seen that the device is very simple, durable and efficient and can be conveniently manipulated.

When it is desired to utilize a machine in which the brush rapidly reciprocates a construction such as illustrated 1n Figs. 4 and 5 may be utilized. By referring to these igures it will be seen that two of the su porting wheels 22 thereof are secured to t ie shaft 23 having gears 24 upon the end portions thereof, these gears meshing with smaller gears 25 carried by a shaft 26 on which a larger gear 27 is also mounted. Gear 27 meshesy With an idler gear 28 which in turn drives a gear 29 secured to a shaft 30, which shaft has cranks 31 which drive pitmen 32 corresponding to the pitmen 9 A suitable housing 33 is preferably arranged upon each side of the frame 34aV so as to concea and protect the train of gears located at each side of the frame. When a machine of this construction is pushed over a floor or other smooth surface the shaft 30 will be revolved at a high speed relative to the driving wheels 22 and the brush 35 carried by the machine will be rapidly reciprocated.

What is claimed is:

l. A machine of the character described comprising a wheel-supported frame, a carriage mounted to reciprocate therein, and

scribed the combination of a wheel-supported frame having longitudinal gui( e grooves set in opposite portions thereof, a carriage mounted to reciprocate within the frame, the ends of the carriage being mounted within the grooves, said carriage having corner posts upsta-nding therefrom and connecting strips secured thereto, a backing plate mounted to slide uponthe corner posts, springs upon said posts and interposed between and bearing against the connecting strips and the backing plate, a brush movably mounted in and extending below the carriage, a filling strip interposed between the back of the brush and the backing late, means for securing the back of the brus the filling strip and the backing plate detachably together, and means operated by the movement of the frame for reciprocating the carriage.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

EZEKIEL H. SEFERIAN.

Witnesses:

ELBER J. SHovER, LOLA B. FRYE. 

